百達翡麗，非常罕有，鉑金及18K紅金自動上弦萬年曆腕錶，配月相，24小時及閏年顯示， Silinvar材質擒縱輪，Spiromax擺輪游絲，Pulsomax擒縱裝置，ADVANCED RESEARCH，限量生產300枚，型號5550P，約2012年製，附原廠證書、額外底蓋、盒子及外包裝百達翡麗，非常罕有，鉑金及18K紅金自動上弦萬年曆腕錶，配月相，24小時及閏年顯示， Silinvar材質擒縱輪，Spiromax擺輪游絲，Pulsomax擒縱裝置，ADVANCED RESEARCH，限量生產300枚，型號5550P，約2012年製，附原廠證書、額外底蓋、盒子及外包裝機芯: 自動上弦 錶盤: 銀色 錶徑: 37毫米 附件: 百達翡麗鉑金折疊扣， 百達翡麗原廠證書、額外底蓋、額外黑色百達翡麗鱷魚皮錶帶、調校針、吊牌、產品資料、皮夾、轉動錶盒及外包裝備注： 品相全新, 初登拍場及限量生產300枚。百達翡麗Details PATEK PHILIPPE. A VERY RARE PLATINUM AND 18K PINK GOLD LIMITED EDITION AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, 24 HOUR INDICATION, LEAP YEAR INDICATION, SILINVAR ESCAPE WHEEL, PATENTED SPIROMAX BALANCE SPRING AND PULSOMAX ESCAPEMENTADVANCED RESEARCH, LIMITED TO 300 PIECES, REF. 5550P, CIRCA 2012Movement: Automatic Dial: Silvered Case: 37 mm.With: Platinum Patek Philippe deployant clasp, Patek Philippe Certificate of Origin, additional solid case back, sales tag, setting pin, additional black Patek Philippe CROCODILE strap, product literature, leather holder, presentation box with winding mechanism and outer packaging Remark: In unworn condition, 300 pieces made, fresh to the market Special notice Lot incorporates material from endangered species that is not for sale and is shown for display purposes only. The endangered species strap shown with the Lot is for display purposes only and is not for sale.Upon sale, the watch will not be supplied to a buyer outside Hong Kong with any watch strap.品相: A rare find at auction, the reference 5550 in platinum is part of the Patek Philippe Advanced Research series of watches. Introduced at Baselworld 2011 in a limited series of only 300 examples, the timepiece participates in the tradition of Patek Philippe to offer avant-garde components in order to enhance timekeeping accuracy and reliability of mechanical watches. Ref. 5550P Advance Research Differing from the first three references of the Advance Research series, the reference 5550 is set apart through its perpetual calendar complication (the first three PPARS watches have an annual calendar) and is fitted with the ultra-thin automatic caliber 240. With a highly attractive dial of silver color with pink gold indexes and luminous dots and hands, the timepiece is bestowed with a very elegant platinum case. More than a perpetual calendar, the wristwatch uses the patented Oscillomax ensemble, which includes the Gyromax-Si balance in Silinvar and 24K gold, the Spiromax balance in Silinvar as well as a refined Pulsomax escapement. A notable result of the accrued efficiency brought by the new Oscillomax ensemble, the power reserve of the watch was increased by nearly 50%, from 48 hours to 70 hours and the movement accuracy was greatly increased. Launched in 2005, reference 5250 was the first timepiece developed under the “Patek Philippe Advanced Research Program” and fitted with the innovative escape wheel in Silinvar. In 2006, reference 5350 followed and introduced the Spiromax balance spring made of Silinvar. Reference 5450 was later produced in 2008 and featured a Spiromax balance spring as well as a Pulsomax escapement in Silinvar. The timepieces were launched in editions of 100 to 300 examples and were instantly sold out. The most advanced model of the series, the reference 5550 in platinum, features all the innovations found in previous references of the program and in addition is the first to feature the Oscillomax oscillator. Patek Philippe filed a total of 17 patent applications for the Oscillomax subsystem, the various elements of the ensemble bringing the following improvements: -- The Gyromax-Si: This innovative balance improves the accuracy and the power reserve of the movement. -- The Spiromax: The Spiromax balance spring in Silinvar improves isochronism. -- The Pulsomax escapement: The new Pulsomax escapement presented in 2011 is a refined version of its 2008 predecessor. This further improved escapement increases the efficiency of the movement and improves its long-term reliability.